Project description:4960 Metagenome-assembled genomes in digestive tract of Buffalo Microbial ecology along the buffalo digestive tract provides insights to its functions and interactions with the host Split metagenomic data by Bins in https://figshare.com/articles/dataset/Buffalo_digestive_tract_metagenome_MAGs/17000302
Project description:Glomus tumors (GT) are perivascular tumors mostly occurring in the distal extremities. Rare cases occur in the digestive tract and may be misdiagnosed with neuroendocrine or gastrointestinal stromal tumors. We aimed to specify the features of GT of the upper digestive tract. We investigated two cases using whole exome sequencing (WES) and RNA-sequencing, and present clinical, histological, phenotypic and molecular features of 16 cases. WES did not reveal any commonly involved cellular pathway. By contrast, RNA-sequencing disclosed a t(1:5)(p13;q32) translocation between MIR143HG and NOTCH2 in both cases. The deducted fusion protein sequence corresponded to the NOTCH2 intracellular domain known as NICD2, which acts as transcription factor. These data were confirmed by high expression of the transcripts of genes targeted by NOTCH cellular pathway (HES and HEY gene families). In our retrospective multicentric series of 16 GT of upper digestive tract MIR143HG-NOTCH2 translocation was detected in 14 (88%) cases. By contrast, it was present in only 2/6 (33%) GT of the distal extremities. Most digestive GT raised from the stomach (n=13), and the others from duodenal (2) or oesophagous (1). All digestive GT were positive for α-smooth muscle actin and transgelin, and negative for cytokeratin AE1/AE3, chromogranine, DOG1, KIT and S100. Most cases were positive for H-caldesmon (n=14) and/or for synaptophysin (n=10). Desmin, CD34 or CD56 were positive in only one case each. Nuclear expression of NOTCH2 was detected in the 14 cases containing the fusion transcripts. The present study shows that MIR143HG-NOTCH2 translocation is present in most digestive GT. This fusion transcript is associated with activation of the NOTCH2 pathway and may drive tumor development. Detection of nuclear NOTCH2 expression may be helpful for diagnosis.
Project description:Presentation of a new data treatment methodology for investigating the full range of biomasses and metabolic activities of the holobiont components from the digestive tract of Gammarus fossarum. Two tissues, intestine and hepatopancreatic caecum from individual animals were compared. Three animals have been analyzed in technical duplicates.
Project description:The purpose of this study is to detect the concentration of various gases,including hydrogen, methane, hydrogen sulfide, nitric oxide in different parts of the digestive tract by a safe and direct method, and to establish a human digestive tract gas profiles. Analyze the differences in gas components in different segments of the digestive tract in patients with different diseases, and analyze the correlation between specific gases and digestive tract diseases and non-specific symptoms.
Project description:Here, we report the use of Illumina RNA-Seq for investigating the physiology of the digestive-tract microbiome within the medicinal leech, Hirudo verbana. About 12 million cDNA reads were mapped against the genomes of the two dominant members of this simple microbiome. Results suggested that the most abundant, yet uncultured Rikenella-like bacterium forages host mucin glycans and ferments the carbohydrates to acetate that is secreted into the environment. The second dominant symbiont, Aeromonas veronii, appears to utilize the acetate secreted by Rikenella as a carbon and energy source, possibly linking the physiologies of the dominant symbionts. This study demonstrates how RNA-seq can be used to reveal the physiology of a naturally occurring microbiome.